Bronze AE3, 19mm, 3.13gm, issued AD 315 Alexandria mint.
Obv: IMP C FL VAL CONSTANTINVS PF AVG, Laureate head facing right.
Rev: IOVI CONSERVATORI AVGG, Jupiter standing left, chlamys across shoulder, leaning on sceptre, Victory on globe in right hand; eagle holding wreath to left, wreath E and N to right.